Experimental Study of Performance of a Counter Flow Ranque-Hilsch Vortex Tube with Inner Threaded Body

Authors: Gürol Önal, Kevser Dincer

Abstract:

In this experimental study, performance of a counter flow Ranque-Hilsch vortex tube (RHVT) with threads cut on its inner surface was investigated experimentally (pitch is 1 and 2 mm). The inner diameter of the vortex tube used was D=9 mm and the ratio of the tube’s length to diameter was L/D=12. The experimental system was a thermodynamic open system. Flow was controlled by a valve on the hot outlet side, where the valve was changed from a nearly closed position to its nearly open position. Fraction of cold flow (ξ) = 0.1-0.9, was determined under 300 and 350 kPa pressurized air. All experimental data were compared with each other, the maximum heating performance of the RHVT system was found to be 38.2 oC and the maximum cooling performance of the RHVT in this study was found to be -30.9 oC at pitch 1 mm.

Keywords: Ranque-Hilsch vortex tube, heating, cooling, temperature separation.

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1086773

References:

[1] K. Dincer, A. Avci, S. Baskaya, A. Berber, Experimental investigationand exergy analysis of the performance of a counter flow Ranque-Hilsch vortex tube with regard to nozzle cross-section areas,International journal of refrigeration 33 (2010) 954 -962.
[2] A. Berber, K. Dincer, Y. Yılmaz, D.N. Ozen, Rule-based Mamdani- type fuzzy modeling of heating and cooling performances of counter-flow Ranque-Hilsch vortex tubes with different geometric constructionfor steel, Energy, 51 (2013) 297-304.
[3] K. Dincer, S. Tasdemir, S. Baskaya, B.Z. Uysal, Modeling of the effects of length to diameter ratio and nozzle number on the performance of counterflow Ranque–Hilsch vortex tubes using artificial neural networks, Applied Thermal Engineering, 28 (2008) 2380-2390.
[4] K. Dincer, Y. Yilmaz, A. Berber, S. Baskaya, Experimental investigation of performance of hot cascade type Ranque-Hilsch vortex tube and exergy analysis, International journal of refrigeration, 34 (2011)1117-1124.